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			90 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			90 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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    http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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//This command checks if the hyperlinks in files are valid. It checks the files
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//with 'fileSuffix' in 'rootDir' for URLs that match 'prefix'. It trims the
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//'prefix' from the URL, uses what's left as the relative path to repoRoot to
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//verify if the link is valid. For example:
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//$ linkcheck --root-dir=${TYPEROOT} --repo-root=${KUBE_ROOT} \
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//  --file-suffix=types.go --prefix=http://releases.k8s.io/HEAD
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package main
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import (
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	"fmt"
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	"io/ioutil"
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	"os"
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	"path"
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	"path/filepath"
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	"regexp"
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	"strings"
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	flag "github.com/spf13/pflag"
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)
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var (
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	httpRE *regexp.Regexp
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	rootDir    = flag.String("root-dir", "", "Root directory containing documents to be processed.")
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	repoRoot   = flag.String("repo-root", "", `Root directory of k8s repository.`)
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	fileSuffix = flag.String("file-suffix", "", "suffix of files to be checked")
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	prefix     = flag.String("prefix", "", "Longest common prefix of the link URL, e.g., http://release.k8s.io/HEAD/ for links in pkg/api/types.go")
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)
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func newWalkFunc(invalidLink *bool) filepath.WalkFunc {
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	return func(filePath string, info os.FileInfo, err error) error {
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		if !strings.HasSuffix(info.Name(), *fileSuffix) {
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			return nil
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		}
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		fileBytes, err := ioutil.ReadFile(filePath)
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		if err != nil {
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			return err
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		}
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		foundInvalid := false
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		matches := httpRE.FindAllSubmatch(fileBytes, -1)
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		for _, match := range matches {
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			//match[1] should look like docs/devel/api-conventions.md
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			if _, err := os.Stat(path.Join(*repoRoot, string(match[1]))); err != nil {
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				fmt.Fprintf(os.Stderr, "Link is not valid: %s\n", string(match[0]))
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				foundInvalid = true
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			}
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		}
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		if foundInvalid {
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			fmt.Fprintf(os.Stderr, "Found invalid links in %s\n", filePath)
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			*invalidLink = true
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		}
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		return nil
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	}
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}
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func main() {
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	flag.Parse()
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	httpRE = regexp.MustCompile(*prefix + `(.*\.md)`)
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	if *rootDir == "" || *repoRoot == "" || *prefix == "" {
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		flag.Usage()
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		os.Exit(2)
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	}
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	invalidLink := false
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	if err := filepath.Walk(*rootDir, newWalkFunc(&invalidLink)); err != nil {
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		fmt.Fprintf(os.Stderr, "Fail: %v.\n", err)
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		os.Exit(2)
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	}
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	if invalidLink {
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		os.Exit(1)
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	}
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}
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